Power set-works for sawmill-carriages.



E. A. WRIGHT. POWER SET WORKS FOR SAWMILL GARRIAGES.

' APPLIGATION FILED DEG. 19, 1910. 1,004,837. Patented Oct. 3, 1911.

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E. A. WRIGHT. POWER SET WORKS FOR SAWMILL GARRIAGES.

I APPLICATION FILED DEC.19, 1910. 1,004,837. 1

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E. A. WRIGHT.- POWER SET WORKS FOR SAWMILL GARBIAGES. APPLIOATIONIILEDDEO.19, 1910.

1,004,837. Patented 0013,1911.

9 BKEETS-SHEET 3.

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E. A. WRIGHT. POWER SET WORKS FOB. SAWMILL CARRIAGES.

' APPLICATION FILED DEO.19, 1910. 1,004,837; Patented 001. 3, 1911.

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B. A. WRIGHT.

POWER SET WORKS FOR SAWMILL UARRIAGES.

APPLIGATIION FILED 1130.19, 1910.

Patented Oct. 3, 1911.

9 SHEETS-SHEET 5.

COLUMBIA PLANOGRAPH 20., WASHINGTON. D. c

E. A. WRIGHT.

POWER SET WORKS FOR SAWMILL CARRIAGES.

APPLICATION FILED No.19, 1910.

9 SHEETS-SHEET 6.

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Patented Oct. 3, 1911.

E. A. WRIGHT.

POWER SET WORKS FOR SAWMILL UARRIAGES. APPLICATION FILED DEO.19, 1910.

1,004,837. Patented 001;. 3,1911.

9 SHEETSSHEET 7.

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COLUMBIA PLANOGRAPH CD" WASHINGTON. D. c.

E. A. WRIGHT. POWER SET WORKS FOR SAWMILL GARRIAGES.

APPLIGATION FILED D3019, 1910.

Patehted Oct. 3, 1911.

9 SHEETS-SHEET s INVENTOR' WITNESSES E. A. WRIGHT.

POWER SET WORKS FOR SAWMILL GARRIAGES.

APPLICATION FILED DEO.19, 1910.

1,004,837. Patented Oct. 3, 1911.

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ELMER A. WRIGHT, OF EVERETT, WASHINGTON.

POWER SET-WORKS FOR SAWMILL-CARRIAGES.

Specification of Letters Patent.

Application filed December 19, 1910.

To all whom it may concern.

Be it known that I, ELMER A. IVRIGHT, a citizen of the United States,residing at Everett, in the county of Snohomish, State of lVashington,have invented a new and useful Improvement in Power Set-VVorks forSawmill-Carriages, of which the following is a specification.

My invention relates to an improvement in power set works for saw millcarriages, and comprises the novel parts and combinations of parts whichwill be hereinafter described and particularly pointed out in theclaims.

The object of my invention is to improve and simplify such devices andparticularly the means used for determining the amount of set to begiven and the convenience of making the adjustment required.

In the drawings I have shown my invention in the form which is nowpreferred by me.

Figure l is a plan View of my device, the pillar and its attachedmeasuring devices being removed. Fig. 2 is a side elevation. Fig. 8 isan end elevation. Fig. 4 is a side elevation of the rockshaft, its leverand attached parts. Fig. 5 is an end view of the rockshaft and the sameattached parts. Fig.

(3 is a side elevation of the controlling lever and the immediatelycontrolled parts on the rockshaft, taken partly as a section on the lineX, X, of Fig. 7. Fig. 7 is an elevation of the same parts taken from aright angular position, the part 55 being in section on a central plane.Fig. 8 is an elevation of the measuring disks and attached parts, partsof this being in section. Fig. 9 is a top plan view of the same parts, apart of one sweep or arm being broken away. Fig. 10 is a plan of thebrake mechanism. Fig. 11 is an elevation of the brake mechanism. Fig. 12is an elevation of the brake slide bar with its rollers. Fig. 13 is aside elevation of the upper end of the rock arm which controls thebrake. Figs. 14: and 15 are elevation and plan of another or alternateconstruction for a brake. Fig. 16 is an end view, partly in section ofthe throw-01f lever or arm. Fig. 17 is a side view of the dog settinglever carried by the throw-off arm. Fig. 18 is a bottom plan of the yokeend of the same lever. Figs. 19 and 20 are face and edge views of thefriction locking dog. Fig. 21 is a sectional elevation of the catch andits carrying bar upon the plane of the broken line Y, Y, of Fig. 22.Fig. 22 is an eleva tion of the catch and its carrying bar, the plane ofthe view being at right angles to that of Fig. 21 and the inclosing casebeing in section. Fig. 23 is a top plan or end view of the same parts.

The most characteristic feature of my de vice consists of the meansemployed for determining the amount of feed given the log and in themanner of operating the same. I employ as part of this mechanism adevice for starting the feed, and a catch or trigger for holding it inaction until released. In connection with these I employ a fixed scaleand a member movable in conformity with the feed of the log, adjustablymounting upon the latter a throw-off device which engages and releasesthe trigger upon completion of the desired feed. I also employ, inconnection with the fixed scale, a setting stop for the throw-offmember, which setting stop is adjustable along the fixed scale asdesired.

For convenience in being able to tell at a glance the amount of log lefton the carriage at any time I prefer to combine a scale with the memberwhich carries the throw-off device and which moves in conformity withthe feed of the log.

There are other features contained in my invention which will appearfrom an inspection of the claims.

As I have herein shown my invention, it is mounted upon an individualframe A, so that it may be bodily placed upon or removed from thecarriage. It is provided with a shaft 1 adapted to line up with theshaft 10 which runs lengthwise the carriage and connects all the kneesto operate synchronously. I have shown the shafts 1 and 10 as connectedby flange couplings 11, whereby the connection or removal of the deviceis a short and simple operation.

The power for operating the set works is obtained from a continuouslyrunning rope R, which passes alongside the carriage throughout theextent of its travel, and passes about two sheaves S and S which aremounted upon horizontal shafts S and S carried by the frame A. Upon theinner ends of these shafts are secured bevel pinions 2 which mesh withbevel gears 20 and 22 which are loosely mounted upon a shaft 21 whichextends parallel with the direction of travel of the carriage. Each ofthe gears 20 and 22, is provided with one part of a clutch device, theother part being carried directly by the shaft 21. The connection of thebevel pinions and gears is such that the gear 20 turns oppositely togear 22, from which it follows that the direction of turning of theshaft 21 depends upon which of the gears 20 or 22 is connected with theshaft by its clutch. In this way the direction of movement of thecarriage knees is controlled. It is the shaft 10 which directly drivesthe mechanism for moving the carriage knees. The shaft 1 of my device isan extension of the shaft 10. This shaft has a gear 12 secured theretoand shaft 21 has a pinion 23 secured thereto and meshing with gear 12.

The type of friction clutch used is largely immaterial. That hereinshown comprises a flange or ring 20 which is secured to the gears 20 and22 and has within it friction segments 27 which are expanded by leverarms 29 which are operated by movement of the cones 24-. lengthwise theshaft. As the form of friction clutch used is no part of my invention,detailed description of the clutch is unnecessary. The two cones 24 areformed upon opposite ends of the same member, which member has aperipheral groove 24*, which receives rollers 26 carried by the yoke arm25, this arm being secured to a rock shaft 5, which extends transverselyof and beneath the clutch shaft 21. It is through the operation of thisrock shaft that the various mechanisms are controlled. The shaft 21 hasa brake disk 13 secured to turn with it. As shown, this is secured tothe pinion 23. The brake mechanism in its preferred form is shown inFigs. 10 and 11 in detail. This construction is as follows. A lever 3 ispivoted at 30, and has a notch 31 which receives the edge of disk 13.This slot is just wide enough to permit free passage of the edge of thedisk when the axis of the notch is true with the plane of the disk. Ifthe lever be swung so as to place the slot at an angle with the disk, itwill clamp the disk and stop it almost immediately. The end of the lever3 opposite its pivot is supported by a lever 34:, pivoted upon pin 33.This end of lever 3 has a hole which receives an eccentric, cam orcccentrically located pin 32, so that if lever 34 is swung up or down itwill correspondingly move the end of lever 3. The lever 34 carries a pinor stud, 36, adjustable in slot 35, upon which is a roller 37 whichrests upon a bar 4: which has a notch 4-0 adapted to receive the rolleror wheel 37 when the bar is in its normal position. The bar 4: in turnrests upon a roller or wheel =11 so that it may slide lengthwise freely.The other end of rod 4: is secured to the end of rock arm 52 by an eyebolt 4-2 which is free to turn in the rock arm. The rock arm 52 issecured to the rock shaft 5. A spring 43 engages the rod 4, beingsubstantially free of strain when the rod 4 is in its normal position,or as shown in Figs. 10 and 11. If the rod be moved toward the left thisspring is put under tension and will return the rod to the positionshown, or that which causes the brake 3 to grip disk 13. Moving the bar4 in either direction from this position raises wheel 37 out of thenotch 40 and frees the brake. The stud 36 is made adjustable in slot- 35so that the brake may be adjusted to just free the disk 13 when theroller 37 is raised out of the notch 10.

In Figs. 14 and 15 is shown another form of brake. In this the brakedisk 13 is the same but the mechanism for engaging it is different.Mounted upon either side of the brake disk 13 are shoes 81 and 82,supported from the frame. The shoe S1 is capable of slight movementtoward and from the disk. A lever S pivoted at 80 has an eccentric head89 engaging the shoe 81 to force it against the brake disk. This levercarries a weight 86 adjust-able along the lever and secured in place bya set screw 88. This lever also has a slot 84 so that wheel 37 may beadjusted in position. Mounted in a position which will be convenient forthe operator, is the mechanism by which the amount of feed of the log isdetermined. This is shown separately in Figs. 8 and 9 and some of itsparts in detail in Figs. 16 to 23. A. vertical shaft 16 extends upwardwithin a pillar 14 and at its upper end has secured to turn therewith, adisk 6. Beneath this is a stationary disk o secured to the top of thepillar 1 1. These two disks are substantially alike in constructionalthough somewhat dilierent in function. Both disks are provided withflanges extending about their lower portions, upon which are placedscales and 61. Preferably the scales are upon separate rings which aresecured to the disks. The scales upon the two disks are, however, madeto read in opposite directions, as is shown in Fig. 9. The scale 60 uponthe rota-tive disk reads toward the left, and when the device isoperated to advance the log the disk turns right-handedly. Thepu rposeof this scale is to show how much of the log is left upon the carriage.The scale 61 upon the lower disk reads right-handedly. It is by thisscale the device is set to determine the amount of the feed and thethickness of the lumber to be cut. At one side of the lower disk (iprojects a lug 62, preferably having a wear block 63 secured to itsupper surface. This is engaged by a catch or dog, 65, which is pivotallyconnected to a rod 66 which at its lower end is connected with andoperated by a rock arm or crank 50. While in the preferred form ofconstruction the two ends of this rod are not strictly the same piece ofmetal, they are so connected as to be one in efiect.

hen the rock shaft 5 is rocked in one direction it applies the clutchconnected with gear 20, releases the brake and raises the dog or catch65 until it engages the block 63, or as shown in Fig. 8. As shaft 16 hasa worm wheel 15 thereon and shaft 1 has a worm 17 engaging wheel 15, theupper disk 6 will be turned right-handedly. Each disk, 6 and 6* is shownas provided with an upwardly extending sleeve 64. Upon the sleeve of thedisk 6 is pivoted. an arm 7. Upon the sleeve of the disk 6 is pivoted anarm 7, these two arms being made alike in most respects. The locking orsecuring mechanism is the same for both. Additional detail views of thisare shown in Figs. 16 to 20. Fig. 16 is an end view of the upper arm, 7,part of this being in section. In the outer end of the arm upon ahorizontal pivot, 72, is pivoted a gravity lever 70, shown detached inside view in Fig. 17 and in partial bottom plan in Fig. 18. This has ayoke or fork 71 which embraces the end 74 of the friction dog 75 whichis pivoted upon the vertical pivot 7 3. This dog has a surface 7 5adapted to frictionally engage the vertical peripheral surface of thedisk, 6 or 6 as the case may be. By this device either of the arms 7 or7 may be secured to its disk in any location. These arms have an edge 76from which the readings of the scale are taken. The upper arm 7 has afinger 77 extending downward, the path of its lower end being such as toengage the dog or catch 65 and release it when, it its forward motion,it reaches this point.

In connection with the rotative disk 6 and its scale, if a fixed pointerbe provided and located so that it reads Zero when the carriage kneeshave been advanced to the saw line, then the amount of the log left uponthe carriage will be directly indicated upon the scale. The lower arm 7and its friction dog acts as an adjustable stop determining the positionin which the knock-off finger 77 of the arm 7 may be set. The arm 7 isset to correspond to the thickness of lumber to be cut. The arm 7 isthen set back until it contacts with the arm 7 The rock shaft 5 is thenrocked so as to apply the clutch to turn shaft 21 from gear 20, it willthereby start disk 6 turning right-handedly. It will also raise dog orcatch 65, which will engage block 63 and retain the parts in thiscondition until dog 65 is knocked off by the knock-off finger 77. Whenthis occurs spring 43 sets the brake, and releases the clutch and thefeed stops. So long as the same thickness of lumber is to be cut thesetting consists only in moving the arm 7 back until it contacts withthe adjustable stop, that is, the arm 7 before rocking the rock shaft.l/vhen another thickness is to be out, the lower stop or arm 7 must befirst re-set.

The lever by which the rock shaft 5 is actuated and controlled is showntogether with the rock shaft and its connected parts in Figs. 4 and 5and the connection of the lever thereto is shown in detail in Figs. 6and 7. The bar 9 of this lever is secured by bolt 90 within a socket orgroove in a casting 51. This casting has a bore in its lower end fittingover but not secured to the shaft5. Secured to the'shaft by a key, orotherwise, is a casting 55 which has a pocket 57 therein extending aboutthe shaft and accommodating the pivot end of the lever head casting 51.The casting 55 has shoulders or stop surfaces 56 at each side of thesocket 57 adapted to be engaged by shoulders 53 upon the lever head 51.The angular position of these engaging surfaces is such that a limitedswing of the lever is possible between engagement of these stops on oneside to engagement upon the other side. The rock arm or lever with whichthe dog or catch 65 is connected, is part of a casting which has an arm44 lying alongside the lever 9 and its pivot head 51. The block has anarm 58 which is opposed to a lug or surface 45 carried by arm 44,whereby the block 55 may swing in one direction without moving arms 44and 50, but will rock them when swung in the other direction, the parts44, 50 not being directly secured to the shaft, being only pivotedthereon. The arm 44 has another lug 46 which faces oppositely to 45 andis adapted to be engaged by a latch pin 91, mounted to reciprocatelengthwise the shaft in guides 54 connected with the lever head 51.Spring 92 holds the latch pin down and it may be raised through a latchlever 94 and rod 93. hen the latch pin 91 is down, or in the positionshown in Figs. 6 and 7, the arm 50 is locked to turn with the shaft.When the latch pin is raised the shaft may be rocked in one directionwithout affecting the rock arm 50 and latch 65.

The normal position of the lever 9 or the position of rest when not inuse, is that shown in Fig. 6. In this position the surfaces 53 and 56are in engagement, and swinging the lever to the left will rock theshaft without any delay or slack. This is the direction in which thelever is moved to feed the log'toward the saw. This raises the catch ordog to engage it with the block 63. Surrounding the block or hub 55 is aspring 59 its ends crossing and engaging opposite sides of lugs 52carried by the lever head. A pin 95, supported in fixed position liesabove and between the ends of the spring, acting as a stop therefor andpreventing the spring arms acting upon the lever except in onedirection. The angle of play possible between the lever and the shaft,that is between surfaces 53 and 56, is suflicient to apply the frictionclutch and engage the catch 65. After these have been engaged, if thelever is released, the spring 59 will return the lever to its normalposition of rest, and before the catch 65 is released.

ln swinging the lever in the opposite direction, or to the right inFigs. 2, 5, and 6, the clutch connected with gear 22 is engaged. Thisturns the mechanism to feed the knees of the carriage backward. In doingthis there is no need of engaging the catch 65. The clutch is held inengagement by hand until the knees have been moved far enough and isthen released. In case it is desired to advance the knees, this may bedone without setting the catch by releasing the latch pin 91 from thelug 46. In running the knees back, the arm 7 carried by the upper diskwill quickly strike the lower arm 7*. Because of the type of frictiondog 75 used, the disk 6 may turn backward freely while the arm 7 is heldby engagement with the lower arm 7. At some point in the rod 66 whichcarries the catch or dog 65 provision is made for adjustment of itslength. This may be by dividing it into two parts and connecting byscrew threads. I have shown a right-and-left threaded member 68 insertedbetween its ends.

The construction of catch which I prefer is shown in detail in Figs. 21,22 and 23. A guide 18 is secured to the pillar 14 and receives the barwhich forms the upper end or extension of the connecting rod 66. Theguide and the part 47 of this member which slides therein are preferablyof such crosssection that they will not turn. They are herein shown asof square cross-section. The block 47 has a recess 48 within which ispivoted the catch 65. The catch is held up by a spring 69 and its swingunder the action of the spring is limited by a bolt 68 having lock nutsthereon. The lower end or shank 49 of the block 47, is threaded forattachment to the rod 66 or a part carried thereby. I

have shown the disks 6 and 6* as scaled to represent 48 inches. This isnot material. In case of a log larger than is represented upon the scalea second turn of the disk may be used.

What I claim as my invention is 2- 1. in a power set works, incombination, afriction driving clutch, a brake member rotative throughsaid clutch, a brake, a catch adapted to hold the clutch in action, aspring acting to release the clutch, a member moved in conformity withthe feed of the log, an adjustable throw-off member carried by said lastmentioned member and adapted to engage and release the catch, a leverconnected with the clutch, the brake and the catch to operate themtogether, and means for disengaging the lever from the catch whendesired.

2. In a power set works, in combination, two friction driving devicesadapted to operate the parts respectively in opposite direction, a rockshaft connected to apply either of said friction driving devices bymovement respectively in opposite direction from its normal position, astop device, normally in engagement, connected with the rock shaft to bereleased when either of the friction driving devices is applied, a catchand means for setting the same when one friction device is applied toretain said friction in action, and a catch releasing device operativeby the feeding mechanism, an operating lever having a slack connectionwith the rock shaft and means for returning said lever to its normalposition before the catch is released.

3. In a power set works, in combination, a driving mechanism a catchadapted to hold said driving mechanism in action, an automatic releasingdevice for the driving mechanism, an operating lever, and means forreturning the operating lever to its normal position before the releaseof the catch.

ELMER A. WVRIGHT.

Witnesses DANIEL M. BEDELL, G. H. BISHOP.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

